Add mirroir

.gitignore

@@ -30,3 +30,4 @@ addition-matricielle
 strings
 carte-identite
 conversion-majuscule
+mirroir

programmation-c-cpp/tp3/mirroir.c

@@ -0,0 +1,41 @@
+/* Mirroir */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+void mirroir(char*, char*);
+
+int main() {
+    char phrase[100];
+    char phrase_mirroir[100];
+    int i = 0;
+
+    printf("Entrez une phrase : ");
+    fgets(phrase, 100, stdin);
+    while (phrase[i] != '\n') {
+        i++;
+    }
+    phrase[i] = '\0';
+
+    mirroir(phrase, phrase_mirroir);
+    printf("%s | %s\n", phrase, phrase_mirroir);
+
+    return 0;
+}
+
+void mirroir(char *phrase, char *phrase_mirroir) {
+    int len_phrase = strlen(phrase);
+    int j = len_phrase;
+
+    for (int i = 0; i < len_phrase + 1; i++) {
+        phrase_mirroir[i] = phrase[j];
+        printf("%c", phrase_mirroir[i]);
+        j--;
+    }
+    phrase_mirroir[len_phrase] = '\0';
+    // TODO: finir
+
+    printf("%s | %s\n", phrase, phrase_mirroir);
+}